Robert f



VR. 152W. BBARDSLEY.

SUPPORTING POST POR BIGYGLBS. No. 564,142.

(No Model.)

Patented July 1 4, 1896-.

UNITED STATES PATENT OFFICE.

ROBERT F. WV.. BEARDSLEY, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE R. F.BEARDSLEY COMPANY, OF SAME PLACE.

SUPPORTING-POST FOR BICYCLES.

SPECIFICATION vfrming part of Letters Patent No. 564,142, dated July 14,1896.

Application filed December 23, 1895. Serial No. 573,165. (No model.)

To all whom) t may concern:

Beit known that I, ROBERT F. W. BEAEDs- LEY, a citizen of the UnitedStates of America, residing at Chicago, in the county of Cook and Stateof Illinois, have invented certain new and useful Improvements inSupporting-Posts for Bicycles, of which the following is aspecification.

The object of the invention is to provide a supporting-post for bicyclesupon which to mount either the seat or the handle-bar, said post to havesuflicient vertical elasticity to take up the vibration caused by anuneven roadway.

To such end it consists of certain features of construction which willbe described, along with the advantages thereof, and carefully pointedout in the claims.

In the drawings, Figure l is a side eleva-- tion of the portion ofthebicycle-frame upon which the seat is mounted. Fig. 2 is a frontelevation of the portion bearing the handlebar. Fig. 3 is a perspective,partly in diametrical section, of the portion of the machine containingmy improvements. Fig. 4L is a side elevation of certain parts thereof.Fig. 5 is a horizontal section in line 5 5 of Fig. 3, and Fig. 6 is asimilar section in line 6l 6 of Fig. 3.

Referring to the drawings, A is the upright portion of the framework ofthe bicycle, in which the seat-post is ordinarily clamped, and B is asupporting-post containing my invention, and adapted in this case toserve as seat-post. Fig. 3 shows the construction of this post, a beinga tubular outer sleeve; b, a stem, preferably square and loosely tted ina disk c, secured, preferably, by brazin g to the bottom of the tube ce;d, a retaining-pin,which prevents the stem b from being drawn out of thedisk c, and e a second disk, which serves as a washer, sliding freely inthe sleeve a. Between .this Washer and the disk cis coniined a spring f,which serves to give. the elasticity sought for in this invention. Abovethe washer e, and preventing it from sliding upward upon. the stem b, isa shoulder, preferably formed by a tube h, brazed to the stem, whichextends upward and carries the horizontal portion i of the seat-post.The tube h is screw-threaded upon its outside and carries a nut j andjam-nut lo, by means of which the tension of the spring may be adjusted.

The post thus described is used as an ordinary seat-post, the seat beingadjusted upon the horizontal portion t', and the vertical portionclamped in the bicycle-frame. The seat is free to move verticallyagainst the force of the spring and the tension of the latter isadjustable without disturbing any of the parts by means of the nut j andjamnut k.

It will be noticed from the above description and accompanying drawingsthat most of the parts of the device are made up of regular stocktubing. This construction of a supporting-post is extremely cheap andsimple, yet very strong'and eiiicient in its operation, and canevidentlybe made in vafrious sizes by using different sizes of tubing.

The same post can be applied to the han-l "dle-bar, as seen in Fig. 2,to take up the vibration of the latter.

I claim as new and desire to secure by Letters Patentl. In asupporting-post for bicycles, the combination with the tubular casing,A, adapted to be secured in the frame of a bicycle, of the non-rotatablestem, b, the bottom, c, secured to the casing, a, the retaining-pin, d,the screw-threaded tube, h, secured to the upper end of the stein, b,the tube, t', the nut,

j, set-nut, k, and the spring, f, interposed between the bottom, o, andnut, j; substantially as described.

2. In a supporting-post for bicycles the combination of the sleeve, a,the post, B, hav- Ving the flat-sided stem, b, `the bottom, c, securedto the lower end of the tube and fitted to the stem, b, the pin, d, thewasher, e, fitted to the interior of the tube, the spring, f, and thenut, j, threaded to the post; substantially as described.

' ROBERT F. W. BEARDSLEY.

Witnesses:

CEAS. O. SHEE'VEY, M. L. SHEAHAN.

